A properly worn dancebelt places the male organs higher on the body, so that the testicles are not hanging down like "clackers."
Most hits in ballet arise from striking at the perinuem, the inside area where the two legs meet, although some rarely do strike higher. The dancebelt placement of the testicles in a high position out of the crotch, against the lower abdomen, gives protection from the low strike between the legs.
There are only rare situations when a kick can be directed at the lower abdomen, where the dancebelt holds the testicles, and these are the result of bad technique. A ballerina turning with her foot at passe many have her knee up high enough to strike the lower abdomen, but, because of the turning, the hit usually occurs on the side of the body, not directly in the middle of the lower abdomen.
Dancebelts are more protective than an "ACE bandage." And a dance would never wear a hard cup under his dancebelt. (Some do wear soft cups of foam to give a cushion against the dancebelt pulling.)
BalletMaster[/i]